From: | "Stephen R(dot) van den Berg" <srb(at)cuci(dot)nl> |
---|---|
To: | Roberto Mello <roberto(dot)mello(at)gmail(dot)com> |
Cc: | Greg Stark <gsstark(at)mit(dot)edu>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: pg_rawdump |
Date: | 2010-10-20 08:44:28 |
Message-ID: | 20101020084428.GD15684@cuci.nl |
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Lists: | pgsql-hackers |
Roberto Mello wrote:
>On Tue, Oct 19, 2010 at 6:13 PM, Stephen R. van den Berg <srb(at)cuci(dot)nl> wrote:
>> Greg Stark wrote:
>>>premise this on the idea that you've lost everything in the catalog
>>>but not the data in other tables. Which seems like a narrow use case.
>> It happens, more often than you'd think. ??My client had it, I've
>> seen numerous google hits which show the same.
>It happened to us recently when a customer had disk issues, and we
It usually happens when there are disk issues, that's exactly what it is for.
>A tool like Stephen is proposing would most likely have helped us
>recover at least some or most of the data, I would hope.
Well, because the customer could recreate (within reason) the original
table definitions, we were able to recover all of his data (12 tables,
including some toasted/compressed).
It's just that matching table and file, and subsequently figuring out
some missing columns which may have been added/removed later,
can be rather timeconsuming and could be made a lot easier (not necessarily
perfect) if that information would have been present in the first page of
a file.
--
Stephen.
Life is that brief interlude between nothingness and eternity.
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